A. Smell (Oder) B. Color and D I’m pretty sure because the common properties are Color, Oder, Melting point, and boiling point
Naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.
Answer:
0.0300 moles of H₂
Explanation:
The original equation is PV = nRT. We need to change this to show moles (n).
n = 
It's important to convert your values to match the constant (r) in terms of units.
30.0 kPa = 0.296 atm
2500 mL = 2.50 L
27 °C = 300 K
Now, plug those values in to solve:
n = 
- for the sake of keeping the problem clean, I didn't include the units but you should just to make sure everything cancels out :)
Finally, you are left with n = 0.0300 moles of H₂
Answer:
1.818x10²³ particles
Explanation:
Add the two atomic masses given to get 74.55 g.
Divide the number of grams given by the molar mass of KCl:
22.5g ÷ 74.55 = 0.302 mol
Multiply the moles by 6.022×10²³ particles
Answer:
1 mile = 1,609 meters
3.02E6 mi^2 x (1609^2m^2/mi^2) = 7.818E12 m^2
1 in= 2.54 cm => 2 in = 5.08cm = .0508m
7.818E12 m^2 x .0508m = 3.97E11 m^3
1 cubic meter = 1,000,000 cubic centimeters
3.97E11 m^3 x (1,000,000 cm^3 / m^3) = 3.97E17 cm^3
1000 cm^3 = 1L
3.97E17 cm^3 x (1L / 1000cm^3) = 3.97E14 L
or 3.97 x 10^14 L
convert to grams since 1L is 1000g
(3.97x10^14) x1000g which is 3.974x10^ 17g which is the final ans
Explanation:
